A light path control device and an electronic device including the light path control device, which reduce color shift at a side viewing angle, are provided. The light path control device can include a light path control layer including first, second and third light control layers, and a transparent base member coupled to the first light control layer or the third light control layer. The third light control layer can have a refractive index which is lower than a refractive index of the second light control layer. The light path control layer can include a first refractive surface disposed between the first light control layer and the third light control layer, and a second refractive surface and a third refractive surface disposed between the second light control layer and the third light control layer.
Legal claims defining the scope of protection, as filed with the USPTO.
2. The light path control member of claim 1, wherein the first refractive surface and the second refractive surface are inclined at different angles with reference to a reference surface parallel to one surface of the transparent base member.
3. The light path control member of claim 2, wherein a first inclined angle of the first refractive surface with respect to the reference surface is less than a second inclined angle of the second refractive surface with respect to the reference surface.
5. The light path control member of claim 4, wherein one of the plurality of second light control patterns has a width which is narrower than a width of one of the plurality of first light control patterns.
6. The light path control member of claim 4, wherein one of the plurality of first light control patterns has a thickness which is thinner than a thickness of one of the plurality of second light control patterns.
7. The light path control member of claim 4, wherein each of the plurality of first light control patterns and the plurality of second light control patterns has a stripe type, a mesh type, a tetragonal truncated-horn type, or a circular truncated-horn type.
9. The light path control member of claim 8, wherein the plurality of second light control patterns are respectively disposed at the plurality of first light control patterns to each have a trapezoid cross-sectional shape where the second refractive surface is an oblique side.
10. The light path control member of claim 1, wherein the second light control layer has a refractive index which is equal to or higher than a refractive index of the first light control layer.
11. The light path control member of claim 1, wherein the first light control layer has a refractive index which is higher than a refractive index of the third light control layer.
14. The electronic device of claim 13, wherein the light path control layer of the light path control member is coupled to a rear surface of the cover window by using a module coupling member.
15. The electronic device of claim 14, wherein the flexible display panel further comprises a polarizing member disposed between the encapsulation portion and the luminance control member.
16. The electronic device of claim 14, wherein the luminance control member further comprises a polarizing film directly coupled to a rear surface of the transparent base member.
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December 11, 2019
November 15, 2022
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